Means of sealing cartons



y 9 @931, F. s. TQMLENSON MEANS OF SEALING CARTONS 2 Sheets-Sheet 1 Filed 0st. 22, 1929 CH)? TON Zzzwezzfr" 25 x12! ,3. QZ/WQQZSrQ/Y y 1-931. F. B. TOMLINSQN MEANS OF SEALING CARTONS- Filed Oct. 22, 1929 2 Sheets-Sheet 2 CHRTON BLHNK Patented May 19, 1931 LINETED srATEvs FRANK B. 'roivnymsolv, or LoUIsvILLnxENTUcKY. jass ienon To REYNOLDS COMPANY, 01' LOUISVILLEQKETNTUCKY;

PAT ar OFFICE MEANS or sEALrNc fcARroNs Application filed October 22, 1929; Serial No. 401,432.

7 i The present invention relates to box formingdevices and has particularly to do witha means for preparing foil covered blanks or material for assembly.- j

The invention consists generally in an improved means for slitting or roughing box or carton blanks or sheets.

In the accompanying drawings which form part of this specification and which illustrate the preferred embodiment of the invention:

Figure 1 is a vertical detail, partly. in section, of a feed device upon a well known box vforming apparatus Figure 2 is a vertical sectional view on the line 2-2 of Figure 1;

Figure 3 is a similar View on the line 3 3 J of said Figure 1;

Figure 4 isa perspective View ofthe knife holder, partly in section;

, Figure 5 is a fragmentary plan view taken on the line 55 of Figure 1;

Figure 6 is a specimen of a blank after it has been acted upon by theslitting device;

herein described-and illustrated. 1

Reference sholuld be had to the patents of E. G. Staude, numbered 1,104,013, folding and gluing machine, dated July 21, v1914, and numbered 1,033,040, feed device for flexible blanks or sheets, dated July16, 1912 for illustrations of machines and the parts thereof in'connection with which the present inven-,

tion is used. I

In a conventional arrangement for feeding blanks to a box forming machine, such as the Staude machine hereinabove referred to,

there are arranged two parallel shafts 10.. and 11, one above the other, for the pickup Keyed to the. lower of these shafts are opposed heads 2, one only a 'of whichis showmand slidingly but firmly drum and the pulleys.

seated upon the heads 12 is a cylindrical drum 13 around which rubber belts or bands 14 travel.

2 Upon the upper shaft 11 and keyed thereto are a plurality of pulleys 15, which are generally rubber faced. Pulleys 15 may be of any selected'number and are suitably spaced 4 i r ner as table -18. on shaft 1 one from another. In juxtaposition to pulleys 15 and 11 is a second pulley 16 which is generally metal faced and which is disposed to register with a blankrslitting member hereinafter to be described. A side guide 17 for cartons going through the machine may be provided so that the adhesive receiving flap of a care.- ton will register with the said slitting device and the pulley l6.

For load'ng blanks preparatory to their insertion nto the machine, generally one at a time, a feed table 18 is provided.

secured upon a bar 20 traversing the appa- -ratus and along which the table may be moved. Said bar'20 may be secured in adjusted position by a lock nut 21 and key 22.;

' Upon the feed table 18 is a dished out seat 23 having thereon a rubber block 24.. By means of a nut 25 on a'screw 26,.the screw 26 projecting through a forked extension of table 18, the position of saidholder 18 and rubber block 24 relatively to the pick up members may be adjusted .to compensate for T hisggg .table is mounted upon a bracket 19 suitably changedthickness and other characteristics of the blank material. The screw 26 and nut '25, as well; as a spring '26a,.which is coiled aboutscrew. 26 between the material of bracket 19 and'theiextension upon the table 18, tomaintain the table 18 in any adjusted pos tion, are notclearly shown, but these parts,spring 2Gtt, screw 26, and nut 25 are like similar membersnow to be described.

To the rear of holder 18 and resting thereupon is an auxiliary'feeder board 27, genera-lly adjustable, over which the carton i blanks pass before entering the device. Be-

tween. parts 27 and 18 a plate of metal, so marked, maybedisposed.

-Also disposedrupon bracket 19 in the same manner as feedplate 18 is a knife-holder comprising a body'29, a blade holding section 30, and a bifurcated end 31.; Suitably placed in the body 29 is an aperture 32 by I which the holder is pivotally supported on secured in bracket 19, and about which is a coil spring 33 the force of which is urged upon the under side of bifurcated end 31. Thus the blade holder 29 is adjustably se- 7 cured in position by the head or nut- 34 upon screw 32, which is on the opposite side of end 31, said holder thus also being prevented from having a vibratory motion and is held against displacement from any adjusted position by the spring 33 which urges end 31 to maintain the position controlled by adjustment of nut 34.

In the blade receptacle 30, which is formed with a bottom plate 40 which is secured by screws upon member 29, is a plurality of blades 35. Between adjacent blades 35 are separators 36. \Vithin the part 30 and beneath the blades 35 and separators 36 and above bottom plate 40 is a plate 37 This member is vertically adjustable by means of two or more machine screws 37 a threaded in plate 40 and bearing upon the bottom of plate 37. By adjustment of plate 37, the penetration of the blades 35 into the flap of a carton blank is regulated.

The blades 35 are secured in any adjusted position by screws 38 threaded in one side of holder section 30. A stud 39 is disposed at the other side of said blade holder 30 and freely rotatable thereon is a roller bearing 41, the'topmost portion of the periphery of which is above'the horizontal cutting edge of blades 35. 7 As carton blanks go through the machine, the knives 35 are adapted to slit the flap, bearing 41 engaging a portion of the'pulley 16 to insure accurate depth of slitting and to avoid a too deep penetration of the.

knives 35.

A bracket 42 is mounted upon a bar 43 traversing the machine somewhat above the shaft 11 and is secured thereon by a lock nut 44. A scraper having an angular body and a blade end 45 is mounted on said bracket so that the blade is adapted to scrape from pulley 16 particles of foilor paper which adhere thereto as a result of the destructive slitting of the carton flap.

Thus the foil covered surface of the carton blank is uniformly ruptured and roughened so that asphaltum or any other suitable adhesive may be applied to the flap of the carton blank to cause said flap to adhere to the blank in a proper position in the final assembly of the carton in the box or carton forming machine- Iclaim:

1. A box forming machine comprising blank feeding means, a tray, knives in said tray, and a guideupon said tray cooperating with said feeding means to regulate the penetration of said knives into blanks.

2. A box forming machine comprising blank feeding means, a tray, knives in said tray, and a guide upon said tray cooperating with said feeding means to regulate the penetration of said knives into blanks, and in which said feed means is of a rotary type, and said guide is a bearing engaging said feed means.

3. A box forming machine comprising roller blank feed means, a tray in juxtaposition thereto, knives in said tray, and means for locking said knives in said tray.

4. A box forming machine comprising roller blank feed means, a tray in juxtaposition thereto, knives in said tray, and means for adjusting the cutting edge of said knives relatively to said tray.

5. A box forming machine comprising roller blank feed means, a tray in uxtaposition thereto, knives in said tray, means for raising and lowering the knives in said tray, and means for securing said knives in any adjusted position.

6. A box forming machine comprising roller blank feed means, a tray in juxtaposition thereto, knives in said tray, and a roller bearing upon said tray engaging said feed means.

7. A box forming machine comprising roller blank feed means, a tray in juxtaposition thereto, knives in said tray, a guide bearing upon said tray defining its position with respect to said feed means, and means upon said tray for moving the knives therein toward said feed means independently of said tray guide bearing.

8. A tray for combination with a box folding machine, comprising a section for knives.

knives in said section, means for raising and lowering the knives therein, and a guide for engaging said box folding machine.

9. A box forming machine comprising blank feeding means, a tray, penetrating means in said tray-adapted to engage blanks in said feeding means, and a guide upon said tray cooperating with said feeding means to regulate the penetration of said penetrating means into blanks.

FRANK B. TOMLINSON. 

